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Answered Same Day Dec 22, 2021

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Robert answered on Dec 22 2021

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For a population with a mean of µ = 100 and a standard deviation of σ = 12,
a. Find the z-score for each of the following X values.
X = 106, Z= 0.5 X = 115,Z=1.25 X = 130,Z=2.5
X = 91,Z= -0.75 X = 88,Z= -1 X = 64, z= -3
. Find the score (X value) that co
esponds to each of the following scores.
z = -1.00, x=88 z = -0.50, X= 94 z = 2.00 , X=124
z = 0.75, X=109 z = 1.50, X=118 z = -1.25, X=85
Chapter 6 #8
What proportion of a normal distribution is located between each of the following z-score
oundaries?
8A
z = -0.50 and z = +0.50?
0.3829
8B
z = -0.90 and z = +0.90
0.6319
8C
z = -1.50 and z = +1.50
0.8664
Chapter 6 #12
For a normal distribution with a mean of µ = 80 and a standard deviation = 20, find the
proportion of the population co
esponding to each of the following scores.
12A
Scores greater than 85
http:
moodle.nsula.edu/mod/quiz/attempt.php?id=387203
http:
moodle.nsula.edu/mod/quiz/attempt.php?id=387211
http:
moodle.nsula.edu/mod/quiz/attempt.php?q=30907&page=1
0.4013
12B
Scores less than 100
0.8413
12C
Scores between 70 and 90
0.3829
Chapter 6 #14
IQ test scores are standardized to produce a normal distribution with a mean of µ = 100 and a
standard deviation of σ = 12. Find the proportion of the population in each of the following IQ...

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